/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    https://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */
package org.grails.cli.compiler.dependencies;

import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import org.apache.maven.model.Model;

import org.grails.cli.compiler.dependencies.Dependency.Exclusion;

/**
 * {@link DependencyManagement} derived from a Maven {@link Model}.
 *
 * @author Andy Wilkinson
 * @since 1.3.0
 */
public class MavenModelDependencyManagement implements DependencyManagement {

    private final List<Dependency> dependencies;

    private final Map<String, Dependency> byArtifactId = new LinkedHashMap<>();

    public MavenModelDependencyManagement(Model model) {
        this.dependencies = extractDependenciesFromModel(model);
        for (Dependency dependency : this.dependencies) {
            this.byArtifactId.put(dependency.getArtifactId(), dependency);
        }
    }

    private static List<Dependency> extractDependenciesFromModel(Model model) {
        List<Dependency> dependencies = new ArrayList<>();
        for (org.apache.maven.model.Dependency mavenDependency : model.getDependencyManagement().getDependencies()) {
            List<Exclusion> exclusions = new ArrayList<>();
            for (org.apache.maven.model.Exclusion mavenExclusion : mavenDependency.getExclusions()) {
                exclusions.add(new Exclusion(mavenExclusion.getGroupId(), mavenExclusion.getArtifactId()));
            }
            Dependency dependency = new Dependency(mavenDependency.getGroupId(), mavenDependency.getArtifactId(),
                    mavenDependency.getVersion(), exclusions);
            dependencies.add(dependency);
        }
        return dependencies;
    }

    @Override
    public List<Dependency> getDependencies() {
        return this.dependencies;
    }

    @Override
    public String getSpringBootVersion() {
        return find("spring-boot").getVersion();
    }

    @Override
    public Dependency find(String artifactId) {
        return this.byArtifactId.get(artifactId);
    }

}
